Steam-cock



UNTTED sTATEs PATENT onricn.

THOMAS SANFORD, OF GLAREMONT, NEW HAMPSHIRE.

STEAM-0DCK.

Specification of Letters Patent No. 32,314, dated May 14, 1861,

To all whom it may concern:

Be it known that I, THOMAS SANFORD, of Claremont, in the county ofSullivan and State of New Hampshire, have invented a new and useful orImproved Steam-Cock; aud do hereby declare the same to be fullydescribed in the following s} 3eci1'ication and illustrated in theaccompanying drawings, of which-w Figure l, is an external view; Fig. 2,a longitudinal section, and Fig. 3, a transverse section of the saidimproved steam cock.

In carrying out my invention, I make use not only of a hollow and screwthreaded cylindrical gate, but of a screw threaded seat cr seat standthe former being fixed to a cylindrical stem and the latter to apartition which extends across the chamber of the cock chamber. V

In the drawings, A denotes the body of the cock as provided withcoupling screws a, c and a chamber Z), the latter being divided by apartition c, c, extended across it` as shown in Figs. 2 and 8. Y

B is the gate which is represented in Figs. 2 and 3, is made cylindricaland hollow and encompasses and screws upon a hollow cylindrical dome orseat stand C, which is at fixed to or screwed into the partition c, c,is open at bottom and is constructed with a passage or hole d, extendinglaterally through its screw. -The screws of such gate and seat stand ordome are arranged as shown in said Figs. 2 and 3.

The gate, B, is afliXed-to the lower end of a cylindrical rod or stem D,which passes through a neck F, and is provided with a hand wheel E,which is iXed on its upper end. On the upper end of the said neck astutng box cap 7 is screwed the lower part of the neck being chambered(as shown at c, 6,) for the reception of the gate, B. By seizing thehand wheel E and rotating it the gate B, may be screwed either upward ordownward on the part C, and so as to either cover or more or lessincrease the passage cl.

The part C is constructed with a seat g, g, for the gate to bring upagainst, and when such gate is screwed firmly down upon the seat thepassage of a liquid or steam through thesaid part C of t-he cock will beestopped.

The nature or principle of my invention (it will be seen from the above)consists in not only constructing the parts, B, and C, of the steamcock, hollow and to screw together,

or one in or on the other, but in making one of them with a lateralopening d, which by the rotation and screwing of the part B relativelyto the other or stationary part C, will be either closed or more or lessopened in order that the passage of steam Dr a liquid through thepartition of the cock chamber, may be either wholly or more or lessprevented as circumstances may require.

Another mode in which I have contemplated the application of thisprinciple or character by which my invention may be distinguished fromothers is to make the part Bto screw into instead of upon or around thepart C, or its equivalent and to form the lateral opening in either ofsuch parts.

I do not claim a steam cock as made not only with a partition across itschamber, but with a valve seat in such partitipn, and a valve alixed vtoa stem furnished with a screw to screw into a neck of the case but,

I claim- My improved steam cock as constructed with its parts B C hollowand to screw together or one on orin the other and, with one of themprovided with a lateral opene ing (l, substantially as specified,.thewhole being applied to the stem D, and partition c, as and so as tooperate as described.

THOMAS SANFORDT Witnesses i R. H. EDDY, F. P. I-IALn, J r.

